Automatic vehicle-brake.



" E. SANNER.

AUTOMATIC VEHIGLE BRAKE.

Patented June 15, 1909.

APPLICATION FILED JUNE 6, 1908.

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ELIAS SANNER, OF COLLEGE MOUND, MISSOURI.

AUTOMATIC VEHICLE-BRAKE.

To ctt whom it may Concern:

Be it known that I, ELIAS SANNER, a citizen of the United States,residing at College Mound, in the county of Macon and State oflvlissouri, have invented certain new and useful Improvements inAutomatic Vehicle- Brakes, of which the following is a specification.

This invention relates to that class of automatic wagon brakes which areput into action by the back pressure in descending a hill, and which areautomatically released when a level grade is reached. The tongue or polehas a lengthwise movement and is connected to the brakes in such amanner that they will be applied by the holding back of the team. Meansare also provided for rendering the brakeeoperating mechan isminoperative so that the wagon may be backed without setting' the brakes.

The object of the present invention is to provide a brake apparatus ofthis kind which is simple in construction, reliable in operation, andwhich can be readily applied to any ordinary running gear withoutmodifying or changing the structure thereof.

In the accompanying drawing, Figure l is a plan View of a vehiclerunning gear showing the application of the invention. Fig. 2 is anelevation partly in section.

Referring specifically to the drawing, 5 denotes the frontaXle, and 6the rear axle. rlhe front sand-board is indicated at 7, the rearsand-board at 8, the front hounds at 9, the rear hounds at l0, the reachat 11 and the tongue or pole at l2. The tongue l2 is pivoted as usual tothe front hounds by means of a transverse bolt 18. The hole 14 in thetongue through which the bolt passes is elongated Aso that the tonguemay have longitudinal movement for a purpose to be presently described.

On the rear hounds 10 is mounted a brake beam l5 which is fitted at itsends with brake-shoes 16. The brake-beam is in the form of a rock-shaftwhich is mounted in bearings 17 on the rear hounds. The rockshaft has abend 18 extending under the reach and forming a crank which is connectedby a rod 19 to the bottoni of the tongue near the rear end thereof,whereby the longitudinal movement of the tongue heretofore referred tomay be utilized to operate the brake.

The device for preventing application of the brake when the wagon isbeing backed Specification of Letters Patent.

Application filed .Tune 6, 1908.

Patented .Tune 15, 1909.

Serial No. 437,129.

is a rock-shaft Q0 having oli'sets 2l which are adapted to be swung soas to abut against the rear end of the tongue whereby the latter isprevented from sliding rearwardly to apply the brake. The rock-shaft Q0is mounted in bearings Q2 on the front hounds, and is fitted with ahandelever for operating it to bring the ofl'sets against the rear endof the tongue or to swing them out of the way. For locking thehand-lever 23, it is provided with a latch Q4 which is engageable with asegment-rack Q5 mounted on the front sandboard T.

To the inner sides of the front hounds adjacent the front axle, and tothe outer sides of the tongue hounds near the front ends thereof aresecured guide-blocks 2G which are for the purpose of guiding the tongueso that it will slide back and forth between the hounds in a straightline without lateral movement. The rear ends of the tongue hounds movein contact with the inner sides of the guide blocks on the front hounds9, and the blocks at the front ends of the tongue hounds move in contactwith the front ends of the hounds In order that the tongue may swing onits pivot 13 without disturbingthe rod 19, the latter is connected tothe tongue in the 'following manner: To the rear end of the tongue, onthe bottom thereof is secured by means of a staple 27 a rod 2S which isbent upwardly at its free end as indicated at 29 to extend looselythrough a vertical opening in the tongue. The end of the rod 19 has aneye through which the port-ion 29 passes at a fit sutliciently tight tohold the rod 28 and prevent drop thereof. The rod 19 also rests on astrap 30 secured to the bot-tom of the axle 5.

The brake is applied when going down hill by the back pressure of theteam on the tongue which slides the same rearwardly, whereupon by reasonof the connection between t-he tongue and the brake-beam, the brake isset. It is to be understood of course that the oifsets will normally bein the posiA tion shown in the drawing, out of the way of the rear endof the tongue so that it may slide rearwardly as stated. Upon reaching alevel grade, the pull of the team on the tongue slides the sameforwardly and the brake is released. To lock the tongue against rearwardmovement, in order that the wagon may be backed without applying thebrake, the rock-shaft 20 is swung in a direction to bring the offsets 2lagainst the rear end of the tongue. By the guide-blocks 26 the tongue isnia-cle to move in a Straight line so that there is no (langer of theconnection between the tongue and the brake-beam binding or gettingstuck.

I claim:

In a. Vehicle brake, the Combination of a brake bemin, e. pivotecllongitudinally-niovzlble tongue having a Vertical opening therein, anangular rod flexibly connected at its front end to the under Side of thetongue near the reui end thereoltl und having an upwardly-projectingbranch normally eX- tending loosely through the Vertical opening in thetongue, and av iocl connecting the said rod and the brake beam andsupporting the angular rod in position with its branches in the saidopening when the front end of the tongue is raised.

In testimony whereof I affix my signature, in presence of two Witnesses.

ELIAS SANNER. lVitnesses A. FRANK GinsoN, Hrm B. GIBSON.

